Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f77da80eafd44a…

MALICIOUS

PDF

102.1 KB
MD5: 8cd76ade7752b3709b6a2a5e930fd389 SHA-1: d430532ec1b5ce548f0886503ec4f5bab97e2cc8 SHA-256: 68f77da80eafd44a7860b4cb42577b8476a07f9747f49e5be6039fd81f03948f
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file that contains an XFA form and triggers the CVE-2010-0188 exploit. This exploit is designed to execute embedded JavaScript. The embedded script, although truncated, appears to be obfuscated JavaScript intended to perform malicious actions. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000346.bin
89c15383051d7cea2a1613045a701a2981991e6c795d8eaed5a52131a8108b86
pdf-embedded-script PDF raw stream script payload at offset 0x346 103857 bytes